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10199results about "Sewerage structures" patented technology

Structure for attaching grating lid onto resin trough body; trough track; trough track forming method; and grating lid

This resin trough body has an approximately U-shape cross-sectional shape that includes a bottom section and side sections on the two sides. Vertical reinforcement ribs are formed at a prescribed interval on the outer surface of both side sections of a trough body of a prescribed length. Further, near the front and back ends of the trough body, horizontal ribs are formed so as to link two vertical ribs. An accommodation space for accommodating a grating lid is formed by a pair of L-shape members being fixed with bolts to a fixing jig that has been attached to the horizontal ribs. The grating lid is accommodated in said accommodation space, and the grating lid is fixed to a bolt fixing section, which is a mounting hole formed in the horizontal plane of the L-shape members.
Owner:FURUKAWA ELECTRIC CO LTD

Filter system mountable in a curbside storm drainage basin

A storm water trough filter system is mountable in a storm vault having interior walls and a storm water inlet formed in at least one of the interior walls which allows storm water to flow therethrough and into the storm vault. The storm water trough filter system has at least one trough section which defines a water trough for receiving storm water flowing into the storm vault through the storm water inlet thereof. The storm water trough filter system further includes at least one mounting bracket which is affixable to at least one of the interior walls of the storm vault, the at least one trough section being mountable on the at least one mounting bracket. The storm water trough filter system further includes a filtering apparatus having a water permeable filtering medium. The water trough defined by the at least one trough section is in fluid communication with the water permeable filtering medium of the filtering apparatus to direct storm water received by the water trough to the filtering medium of the filtering apparatus.
Owner:FABCO INDS

System for purifying and delivering surface water to an aquifer

A system for purifying and delivering surface water from rain or snow-melt to the local aquifer in order to increase the local groundwater level, is disclosed. The system includes activated charcoal for removal of contaminants including per- and polyfluoroalkyl substances, commonly referred to as PFAS, from surface water prior to delivering the water to the aquifer.
Owner:CHITTOOR MADHVI

Balcony egde drainage system

The present invention relates in general to a linear drain system for terminating installed tiles at the edges of balconies or terraces and redirecting water away from the walls below. The assembly has an elongate channel section forming a longitudinally extending trough, the trough having a floor with a first interior surface shape and a pair of wall sections extending substantially vertically upward from opposing longitudinal edges of the floor. An insert is releasably disposed in the elongate channel section to overlie the trough floor. At least one outlet assembly having a central mounting portion with a surface shape that is the same as the first interior surface shape of the floor and is connected to the floor. The at least one outlet assembly is coupleable to a plumbing system. An elongate edge assembly extends longitudinally from one of the pair of wall sections of the elongate channel section. A flange extends orthogonally from an upper edge of the wall section with a leg portion extending downwardly from a longitudinal edge of the flange. The leg portion has a lip extending outwardly at an angle from a distal end of the leg portion. The floor drain assembly is positioned adjacent to a free edge of the balcony with the leg portion and lip of the elongate edge assembly positioned to direct fluids away from a vertical face of the free edge of the balcony.
Owner:HYDROVIM IP PTY LTD

Cover assembly and methods

Systems and methods of installing a fixture into a material are provided. The fixture includes a body and a cover assembly that is removably coupled to the body and configured to move relative to the body once the body has been secured within the material. The cover assembly includes a movable component configured to aid removal of the cover assembly.
Owner:ZURN WATER LLC

Desert photovoltaic field rainwater resource utilization and sand land sand fixation integration method

The invention discloses a desert photovoltaic field rainwater resource utilization and sand fixation integration method, and relates to the technical field of desert control and new energy comprehensive utilization. The system comprises the following components: S1, photovoltaic panel array layout and rainwater collection system design, S2, sand stabilization vegetation optimization and configuration, S3, intelligent drip irrigation system construction and operation, and S4, sand ecological monitoring and optimization management. By means of the integration method, rainwater resources of the desert photovoltaic field are fully utilized, the rainwater resources are effectively collected and utilized by accurately analyzing the rainfall characteristics of the desert area and designing a reasonable photovoltaic panel angle and a rainwater collecting system, a stable water source is provided for the photovoltaic field, and meanwhile, by combining optimization and configuration of sand stabilization vegetation, the sand stabilization effect of the desert photovoltaic field is improved. The ecological environment of the sand land is improved, the vegetation coverage rate and the soil fertility of the sand land are improved, and aggravation of the desertification process can be prevented.
Owner:INNER MONGOLIA AUTONOMOUS REGION ACAD OF FORESTRY SCI

Urban road accumulated water monitoring and drainage system

The invention provides an urban road ponding monitoring and drainage system. The urban road ponding monitoring and drainage system comprises a monitoring module which collects ponding depth, water velocity, rainfall intensity and field image data in real time; the initialization configuration module sets parameters such as an accumulated water depth threshold value; the data transmission module encrypts and transmits data to the central control module; the model algorithm optimization module constructs a three-dimensional ponding diffusion model and outputs a predicted ponding depth and an optimized drainage strategy; the central control module generates a drainage pump rotating speed instruction and the like; the drainage execution module dynamically adjusts drainage pump power and a drainage path; the self-checking and fault-tolerant module calculates a health index of drainage equipment and switches redundant equipment; the early warning module sends risk level information; and the interaction module displays information such as a real-time accumulated water thermodynamic diagram. The urban road drainage efficiency can be improved, the water accumulation risk is reduced, and smooth urban traffic and public travel safety are guaranteed.
Owner:POWER CHINA KUNMING ENG CORP LTD

Efficient environment-friendly sewage treatment device and use method thereof

The invention relates to the technical field of sewage treatment, and discloses an efficient environment-friendly sewage treatment device and a using method thereof.The efficient environment-friendly sewage treatment device comprises a base, a motor is fixedly connected to the side wall of the base, and an output shaft of the motor is fixedly connected with a first gear. The liquid level of water is guaranteed to be lower than the center point of the supporting frame, then a power source of a motor is switched on, the motor drives a first gear ring to rotate through a first gear, the first gear ring drives a rolling pipe to roll along the inner wall of the supporting frame, and in the process, impurities floating on the liquid level make contact with the inner wall of the rolling pipe; and after the impurities with improved viscosity are in contact with the inner walls of the rolling pipe and the precipitation ring, the rotating rolling pipe and the precipitation ring intercept the floating impurities, so that the application of a filter screen is eliminated while the effective interception of the floating objects is realized, and the phenomenon that the filter screen is blocked after the equipment is used for a long time and the normal use of the equipment is influenced is avoided.
Owner:SICHUAN YANGZISEN ENVIRONMENTAL PROTECTION EQUIP CO LTD

Ecological protection device for slope drainage and regreening

The invention discloses a slope drainage and regreening ecological protection device, and belongs to the technical field of slope protection. The device is composed of an intercepting ditch, a drainage ditch, a concrete supporting structure and an irrigation structure. The intercepting ditch is located at the top of the slope, located at the bottom and responsible for intercepting and dredging water flow. The concrete supporting structure comprises a concrete frame and reinforcing piles, the frame forms a rectangular planting area on the slope surface, the reinforcing piles penetrate into the slope, and a stable foundation is provided for regreening. A spray-seeding material layer is arranged in the planting area, and the surface layer is covered with a grid. The irrigation structure comprises a water storage cavity, two water pumping structures and an irrigation cavity and can collect rainwater and irrigate according to needs. The device has obvious advantages, the drainage system reduces water and soil loss and geological disaster risks, and the vegetation coverage rate is increased through the regreening design. Meanwhile, water resource recycling is achieved through the water storage irrigation function, manpower and water resources are saved, the high efficiency and sustainability of slope ecological protection are guaranteed, and important application value is achieved in the field of slope protection.
Owner:贵州省水城公路管理局

Dynamic drainage system of municipal sewage pipe network and control method

The invention relates to the technical field of urban drainage management, and discloses a municipal sewage pipe network dynamic drainage system and a control method, and the system comprises a sewage pipe network, a central controller, a pump station, a valve and an edge control terminal; the control method comprises the following steps that real-time data are obtained from a plurality of sensors arranged in a sewage pipe network, the plurality of sensors comprise a flow sensor, a water level sensor, a pressure sensor and a rainfall sensor, and the obtained real-time data comprise the sewage flow, the water level, the pipeline pressure and the external rainfall inflow in the pipe network; based on the collected real-time data, dynamic hydraulic modeling is carried out on the sewage pipe network through a central controller, a mathematical model for describing the hydraulic state change of the pipe network is established, and the mathematical model comprises spatio-temporal evolution of flow, water level and pressure. According to the invention, by constructing a drainage scheduling mechanism based on real-time data modeling and edge control linkage, dynamic adjustment and stable control of the running state of the sewage pipe network are realized.
Owner:SUZHOU KAIDA MUNICIPAL LANDSCAPE CONSTR CO LTD

Drain assemblies, and related kits and methods

A drain assembly includes a drain body, barrel, plug, and sleeve. The drain body has an interior surface defining a channel along an axis and having interior threads thereon. The barrel has a central body having an upper end, with a flange extending radially outward therefrom and defining a landing surface. The central body has opposed exterior and interior barrel surfaces having exterior and interior threads, respectively. The interior barrel surface defines a channel alignable with the axis. The exterior threads are engageable with the drain body interior threads for axially adjusting the barrel relative to the drain body. The plug has a top surface and an outer body extending axially downward to a stop surface. An inner portion of the outer body extends axially below the stop surface and has external threads engageable with the barrel interior threads. The sleeve is sealingly receivable between the stop and landing surfaces.
Owner:OATEY CO

Water conservancy construction drainage device

The water conservancy construction drainage device comprises a slag collecting cylinder, an outer cylinder, an inner cylinder and a connecting cylinder, the inner cylinder is fixed to the top of the inner wall of the outer cylinder and coaxially arranged, the connecting cylinder is a circular truncated cone cavity and fixed to the bottom of the outer cylinder, the connecting cylinder is fixed to the top of the slag collecting cylinder, and spiral flow guide fins are arranged on the inner wall of the outer cylinder; a fixing ring is fixedly connected to the position, close to the top, of the surface of the outer cylinder, a water inlet is fixedly connected to the top of the fixing ring and is of a gradually-shrunk flow guide structure, one end of the water inlet extends into the outer cylinder in the tangential direction, and the bottom of the isolation cylinder communicates with a filter cylinder which is obliquely installed at the bottom of the isolation cylinder. One side in the filter cartridge is communicated with a sand collecting box, and a plurality of layers of self-adaptive filter screens are arranged in the filter cartridge. The drainage device for water conservancy construction relates to the technical field of water conservancy drainage, and can reduce blockage of the filter screen, improve the filtering effect, prevent fine silt from entering the pump body and ensure smooth drainage at the same time.
Owner:GANSU SHENGSHI WANYUAN CONSTRUCTION CO LTD

Floor drain

A floor drain system is provided comprising a coupler piece, extension pieces, end caps, and a drain cover. The drain coupler piece includes a connector for connection to a drain line and receivers for engagement with drain extension pieces, forming a drain main body. The main body includes opposed side walls and a floor forming a channel for liquid to flow and drain. Each side wall includes a lip extending inward and along the length of the drain and configured for mounting a grate. End caps are configured for sealing ends of the drain. Alternatively, a light box end piece can be utilized to seal an end of the drain while providing a housing and access point for drain lighting. Tile can be installed overlaying at least part of a top surface of each side wall or abutting the drain. The drain extension pieces can be cut to size.
Owner:BLAMBLE DAVID

Linear drain assembly

A linear drain assembly is provided. The linear drain assembly includes a base portion, a first peripheral portion slidable relative to the base portion, and a sealing member disposed between the first peripheral portion and the base portion forming a seal between the base portion and the first peripheral portion.
Owner:KOHLER CO(US)

In-line pumping apparatus, system, and method for increasing liquid flow in gravity networks

The invention provides a liquid pumping apparatus, system and method for increasing the flow of fluid in a gravity feed network. The invention provides an in-line main pipe with upstream and downstream portions flanking a manifold that houses a check valve. One or more branch pipes may form a fluid bypass around the manifold. Each branch pipe includes a pump configured to accelerate the fluid in at least partially the same direction as the downstream flow. A sensor may be adapted to measure a parameter related to the liquid level in the main pipe. A rotary encoder may be adapted to measure the flow rate in the main pipe as a proportional function of the check valve angle, under gravity flow conditions. A control system may energize the pumps when the liquid level in the main pipe is above a predetermined threshold according to the parameter.
Owner:IND FLOW SOLUTIONS OPERATING LLC

Elevator trench drain

A trench drain includes a trench, a grating seat and a grating hingedly connected to the trench. The trench has a base wall with peripheral side walls extending upwardly therefrom and an outwardly-extending peripheral flange. The grating seat is configured to receive the grating. The peripheral side walls of the trench have a pair of opposing elongated slots formed therein and the grating has a pair of posts on opposing ends thereof. Each of the pair of posts on the grating are received in a respective one of the pair of opposing elongated slots of the trench to establish an axis of rotation.
Owner:ZURN WATER LLC

Shower base system

A pre-installation method for a shower base includes obtaining a combination of layers forming the shower base where the combination of layers includes a waterproof membrane mounting surface and a subfloor facing surface opposite the waterproof membrane mounting surface. The method also includes adhering, in a remote location from an installation site, a waterproof membrane to the combination of layers forming the shower base. The method further includes water testing, in the remote location, the shower base with the adhered waterproof membrane.
Owner:WELCH TILE & MARBLE CO

Slurry separation and purification device for bridge pile foundation excavation

A slurry separation and purification device for bridge pile foundation excavation, comprising a temporary storage tank (1) and a settling tank; a residue guide channel (11) is fixedly connected to one side of the temporary storage tank (1), and the other side is rotatably connected to a circular pipe (12); the temporary storage tank (1) is fixedly connected to a support (13), the support (13) being fixedly connected to an inner pipe (14); the circular pipe (12) is rotatably sleeved on the outside of the inner pipe (14) and is rotatably connected thereto, the other end of the inner pipe (14) is connected to a water pump, and the other end of the circular pipe (12) is fixedly connected to an extraction and filtering device (2); the extraction and filtering device (2) comprises a branch pipe (21), the branch pipe (21) being communicated with the circular pipe (12); a filtration cone (22) is provided at the end of the branch pipe (21) away from the circular pipe (12), and the bottom of the filtration cone (22) is provided with a suction pipe (23); a blocking plate (24) is hinged to the upper end of the suction pipe (23), a torsional spring being provided on a hinge shaft of the blocking plate (24), and a discharge port (25) being provided at the upper end of the filtration cone (22); the support (13) is fixedly connected to a driving device (3), and the driving device (3) drives the circular pipe (12) to rotate forwards and backwards alternately.
Owner:CHINA RAILWAY SEVENTH ENG BUREAU GRP GUANGZHOU ENG CO LTD +1

Modular porous swale

A modular porous swale. The modular porous swale may comprise a porous concrete block and filtration joint. The porous concrete block may snugly fit within a trench having a lower portion filled with an absorption media. The absorption media may include gravel, activated alumina, bone char, biochar, bone char and activated alumina mixture, and biochar and activated alumina mixture. The porous concrete block may have a top surface inwardly-sloped to a nadir. The filtration joint may be disposed within the porous concrete block and along the nadir. The liner may cover one or more sides of the porous concrete block. The perforated pipe may be located within the absorption media. The filtration joint may substantially align above a portion of the perforated pipe when the modular porous swale is installed within the trench.
Owner:THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY

Fast installation cap and drain

An elongated floor cleanout assembly includes a drain assembly. The drain assembly has a body assembly and a grating cover secured to the body assembly by at least one screw. The drain assembly also has a cap enclosing the drain assembly and secured to the grating cover by the at least one screw. The cap defines at least one slit having an arcuate portion and an end. The at least one screw is captured in the arcuate portion and the cap can be rotated to selectively allow the at least one screw to freely pass through the end for removal of the cap without removing the at least one screw.
Owner:BLUCHER METAL

Bar assembly for use in gratings

A grating including a bar assembly having bearing bars with a unique cross section connected to one another with crossbars. The bearing bars are generally hourglass-shaped in cross section and include a first region, a second region, and a third region interposed therebetween. The first and second regions flare outwardly away from opposite ends of the third region. The ends of the first and second regions are of a first width and the third region is of a smaller second width. First and second side sections of the third region connect to each of the first and second regions at an angle of greater than 90 degrees. Channels for the crossbars are defined in a first end of the first region of the bearing bar or form a hole extending from a first side section to a second side section of the third region of the bearing bar.
Owner:OHIO GRATINGS INC

Gutter system, cover unit and securing element

The invention relates to a gutter system (1) comprising at least one frame unit (10), at least one cover unit (20) and at least one securing element (30), wherein the frame unit (10) comprises at least one receiving area (12) for arranging the cover unit (20), and wherein the securing element (30) is adapted to engage in the cover unit (20) and to releasably engage in the receiving area (12) so the cover unit (20) can interlock in the receiving area (12) of the frame unit (10). The invention also relates to a cover unit (20) and a securing element (30).
Owner:ACO AHLMANN SE & CO KG

Ladder-like grating, and method for producing a ladder-like grating

The present invention relates to a ladder-like grating (10) comprising a plurality of longitudinally extending support sections (12) and a plurality of transversely extending sections (14). The transversely extending sections extend between the longitudinally extending support sections, wherein each transversely extending section comprises one flat subsection (18) and two connecting subsections (20), one at each end of the flat subsection. Each connecting subsection is a twisted rectangular strip extending transversely from one of the longitudinally extending support sections to the flat subsection of the transversely extending section. The present invention also relates to a method for producing a ladder-like grating.
Owner:ACO AHLMANN SE & CO KG

Universal base plate with tabs

Fluid runoff systems, methods, and apparatus for processing fluid runoff are provided. In one implementation, a base plate for receiving an inlet casting at a drain basin may be provided. The base plate may include a flat surface with an aperture and an outside edge surrounding the flat surface; a raised lip may surround the outside edge and a flange may extend in a horizontal direction away from the raised lip. The flange may define a flat surface for an inlet casting. The base plate may further include one or more sets of tabs located on the underside of the plate. In another implementation, a fluid runoff system may comprise an inlet casting, a base plate, a drain basin, and a pipe. The base plate may include one or more sets of tabs for connecting with the drain basin.
Owner:ADVANCED DRAINAGE SYSTEMS INC

Degenerated grassland in-situ remediation system based on three-dimensional spatial layering

The invention discloses a degraded grassland in-situ remediation system based on three-dimensional space layering, and relates to the technical field of degraded grassland remediation, the degraded grassland in-situ remediation system comprises a high-altitude energy collection area, an earth surface vegetation remediation area and an underground rainwater storage and use area, the ground vegetation restoration area comprises an energy storage device, a rainwater collection barrel and a rotary sprinkling irrigation machine, and the underground rainwater storage and use area comprises a reservoir and a water transportation and distribution pipeline network. Rainwater can be completely collected and distributed according to needs; meanwhile, the composite solar panel constructed in a layered mode is used for shading, sunlight is collected, and adjustable shading is conducted on the plants.
Owner:SHIJIAZHUANG INST OF AGRI MODERNIZATION CHINESE ACAD OF SCI

Method for ecological management of Tenggri desert by using photovoltaic power and pasture

The invention provides a method for carrying out ecological management on the Tenggri desert through photovoltaic and pasture. The method comprises the steps that S1, a photovoltaic panel intensive water irrigation system is built; s2, land leveling and improvement, wherein land under the photovoltaic panel intensive water irrigation system is leveled, fertilized and improved; s3, planting: sowing Tenggri desert indigenous plant ecological bags under a photovoltaic panel intensive water irrigation system; the Tenggri desert indigenous plant ecological bag comprises the following plants: caragana microphylla, salix psammophila, sophora alopecuroide, artemisia selengensis, elymus dahuricus, agriophyllum squarrosum, astragalus adsurgens, kochia scoparia and mongolian wheatgrass; a photovoltaic panel intensive water irrigation system and special forage grass are combined to comprehensively control desertification, power generation and ecological management complement each other, multiple ecological benefits of land improvement, sand stabilization and land reclamation, wind and sand suppression and vegetation restoration are achieved while power generation is performed, high-quality forage grass can be provided, animal husbandry development is promoted, and economic and ecological benefits are improved. In addition, compared with a traditional irrigation mode, water can be saved by 30-70% through drip irrigation.
Owner:INNER MONGOLIA GRASSLAND TECHNOLOGY INNOVATION CENTER CO LTD +1

Sequencing batch storage and drainage sewage pipe network anti-deposition method and system

The invention relates to an anti-deposition method and system for a sequencing batch storage and drainage sewage pipe network. The method comprises the following steps: determining the highest allowable storage water level and the lowest allowable discharge water level of each sewage pump station according to an unfavorable overflow point and a leakage point in an upstream service range of each sewage pump station; according to the historical change rule of the flow of each sewage pumping station, determining a corresponding upstream discharge water quantity increase abrupt change point; according to the drainage path of each sewage pump station and the upstream drainage amount increase abrupt change point, determining the sequence of the water storage-drainage mode of each sewage pump station; according to the drainage path and the operation mode of each sewage pump station, adjusting the operation mode and the pumping and drainage flow of other sewage pump stations; and when each sewage pump station is in the water storage-drainage mode, monitoring the liquid level change in real time, and controlling the operation state of the corresponding lift pump according to the liquid level change of each sewage pump station, the corresponding highest allowable water storage level and the corresponding lowest allowable water discharge level. According to the invention, the pollutant collection and transfer efficiency can be effectively improved.
Owner:NORTH CHINA MUNICIPAL ENG DESIGN & RES INST

Anti-blocking water supply and drainage filtering device

The invention discloses an anti-clogging water supply and drainage filtering device, and relates to the technical field of water supply and drainage filtering, the anti-clogging water supply and drainage filtering device comprises a water supply and drainage pipeline, and the front end and one side of the water supply and drainage pipeline are respectively provided with a water inlet and a water outlet. The driving motor drives the supporting shaft A to enable the rolling brush to revolve, the rolling brush reversely rotates by means of the fluted disc A and the gear ring A, and dynamic shearing force is formed to efficiently strip impurities on the surface of the filter screen; the inclined push plate and the rolling brush guide the stripped impurities into the impurity guide piece through centrifugal force, and the spiral piece is combined for discharging, so that secondary blockage is avoided; the supporting shaft A is linked with the supporting shaft B through the belt pulley group, so that the filter screen reversely rotates at a constant speed, the relative speed of the rolling brush and the filter screen is multiplied, the impurity stripping effect is enhanced, loose impurities are thrown to the edge of the filter screen through centrifugal force, the accumulation risk of a central area is reduced, and self-cleaning of the filter screen, directional discharging of the impurities and dynamic prevention and control of the blocking risk are achieved through the mode. The continuous operation efficiency of the water supply and drainage filtering device is effectively improved, and maintenance cost and energy consumption are reduced.
Owner:ZHONGSHAN KEMAI WATER TECHNOLOGY CO LTD

Filtering anti-blocking structure of drainage pipe for road maintenance

The invention discloses a filtering anti-blocking structure of a drainage pipe for road maintenance, and relates to the technical field of sewage discharge. The filtering anti-blocking structure of the drainage pipe for road maintenance comprises a first pipeline, and the top of the first pipeline is fixedly connected with a first filtering mechanism. According to the filtering anti-blocking structure of the drainage pipe for road maintenance, sewage is preliminarily filtered by arranging the conical filtering cylinder, and the sewage is secondarily filtered by arranging the first filtering disc and the second filtering disc in a matched manner, so that the situation that a single filtering net is easily and instantly blocked by large-particle impurities is avoided, the pressure of post-stage filtering is reduced, and the filtering efficiency is improved. A limiting rotating ring block is arranged, a first driving motor is started, the limiting rotating ring block is finally driven to rotate through gear meshing, at the moment, a rotating ball continuously slides on the surface of the limiting rotating ring block, and a first spring is matched, so that a second fixing block periodically reciprocates; finally, the banister brush is promoted to clean the through holes of the conical filter cartridge, and the through holes are prevented from being blocked.
Owner:湖南晟通鑫茂环境科技有限公司

A triple ecological protection structure for slopes

The utility model discloses a three-link ecological protection structure for a slope, including a slope, two sides of the slope are provided with fixed beams 1, an irrigation structure is provided on the top of the slope, a plurality of pairs of fixed beams 2 are provided on the slope at equal intervals, a plurality of arc-shaped guide plates are fixedly connected between the fixed beams 1 and 2, a plurality of planting frames are provided between the arc-shaped guide plates, a drainage structure is provided on the opposite side of the fixed beams 1, a filtering structure is provided on the fixed beams 1 and 2, a drainage channel is provided at the bottom of the slope, a crushed stone layer is provided at the bottom of the slope, and a metal grid is fixedly installed on the surface of the crushed stone layer. The advantages of the utility model compared with the existing technology are: the utility model can not only guide rainwater to quickly drain water to avoid rainwater flowing straight down along the slope to form runoff to wash away vegetation and soil, but also collect rainwater and carry out reasonable irrigation to ensure the growth of slope vegetation.
Owner:HUAYUAN ECOLOGY (BEIJING) TECH DEV CO LTD